Modification of supported titanium-magnesium catalysts of ethylene polymerization with metal chlorides

Journal Article · Thu Nov 10 04:00:00 EST 1988 · J. Appl. Chem. USSR (Engl. Transl.); (United States)

OSTI ID:6365813

Ivanchev, S S; Kryzhanovskii, A V; Zakharov, P S; Bogdanov-Kat'kov, N V

It has previously been shown that the use of chlorides of nickel, cobalt, iron, tin, aluminum, or other metals as components of the supports for titanium-magnesium ethylene polymerization catalysts makes it possible to vary their catalytic activity and specificity over a wide range. The authors investigated the features of ethylene polymerization on Ziegler-Natta catalysts supported on MgCl/sub 2/ which have been modified with chlorides of Co, Ni, Sn, or V, with the objective of studying the mechanism of the modifying action of metal chlorides. The catalysts were prepared by dispersing MgCl/sub 2/ and the Lewis acid in a ball mill in the presence of TiCl/sub 4/. Compositions and activities of the catalysts prepared are shown. The introduction of nickel chloride or cobalt chloride into MgCl/sub 2/ leads to an increase in TiCl/sub 4/ activity while preserving the mechanism of its attachment to the support surface, while modification of MgCl/sub 2/ with tin tetrachloride or vanadium oxychloride leads to a sharp change in the state of TiCl/sub 4/ on the support surface and to a decrease in catalyst activity.

• OSTI ID: 6365813
• Journal Information: J. Appl. Chem. USSR (Engl. Transl.); (United States), Journal Name: J. Appl. Chem. USSR (Engl. Transl.); (United States) Vol. 61:5; ISSN JAPUA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKALINE EARTH METAL COMPOUNDS
ALKENES
CATALYSIS
CATALYST SUPPORTS
CATALYSTS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHLORIDES
CHLORINE COMPOUNDS
COBALT CHLORIDES
COBALT COMPOUNDS
ETHYLENE
HALIDES
HALOGEN COMPOUNDS
HETEROGENEOUS CATALYSIS
HYDROCARBONS
KINETICS
MAGNESIUM CHLORIDES
MAGNESIUM COMPOUNDS
MATERIALS TESTING
NICKEL CHLORIDES
NICKEL COMPOUNDS
ORGANIC COMPOUNDS
OXYCHLORIDES
OXYGEN COMPOUNDS
POLYMERIZATION
PROMOTERS
REACTION KINETICS
SURFACE PROPERTIES
SURFACE TREATMENTS
TESTING
TIN CHLORIDES
TIN COMPOUNDS
TIN HALIDES
TITANIUM CHLORIDES
TITANIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VANADIUM COMPOUNDS